Skip to Main content Skip to Navigation
Journal articles

Bovidae (Mammalia) from the lower Pliocene of Chad

Abstract : The sites of Kossom Bougoudi (KB) and Kollé (KL) are intermediate in age between the Sahelanthropus sites of Toros Menalla and the Australopithecus sites of Koro Toro, and their bovid faunas are also intermediate in composition and stage of evolution. Four new taxa are erected. The hippotragine Tchadotragus fanonei nov. sp. is more derived than the type-species of the genus, from Toros Menalla. Kobus ammolophi nov. sp. is also clearly related to the most common reduncine of the latter sites, rather than with other African forms. However, Jamous kolleensis nov. gen. nov. sp., a new bovine with extremely divergent, horizontal horn-cores, is unrelated to other Chadian Bovini. The KB and KL assemblages document the gradual replacement of hippotragines by alcelaphines in Northern Chad, but it is not necessarily linked with environmental change, as all Chadian assemblages virtually lack indicators of bush or woodland like Tragelaphini and Aepyceros. In spite of a significant endemic component, the KB and KL Bovidae compare best with some of those from Sahabi in Libya, confirming North-South connections.
Complete list of metadatas

Cited literature [47 references]  Display  Hide  Download

https://halshs.archives-ouvertes.fr/halshs-00433315
Contributor : Denis Geraads <>
Submitted on : Wednesday, November 18, 2009 - 6:25:54 PM
Last modification on : Wednesday, December 23, 2020 - 11:30:02 AM
Long-term archiving on: : Thursday, June 17, 2010 - 8:53:12 PM

Files

230_Bovid_LoPlio_tchad.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Denis Geraads, Cécile Blondel, Hassan Mackaye, Andossa Likius, Patrick Vignaud, et al.. Bovidae (Mammalia) from the lower Pliocene of Chad. Journal of Vertebrate Paleontology, Society of Vertebrate Paleontology, 2009, 29 (3), pp.923-933. ⟨10.1671/039.029.0311⟩. ⟨halshs-00433315⟩

Share

Metrics

Record views

497

Files downloads

613